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Business Segment Information (Tables)
 6 Months Ended
Mar. 31, 2016
Segment Reporting [Abstract]  
Schedule of Segment Reporting Information, by Segment
Information concerning our business segments is as follows:
 
Three Months ended March 31,
 
Six Months Ended March 31,
 
2016
 
2015
 
2016
 
2015
 
(dollars in thousands)
Net Revenues:
 
 
 
 
 
 
 
Solar (1)
$
9,801

 
$
9,463

 
$
19,344

 
$
17,749

Semiconductor
10,507

 
12,088

 
21,206

 
12,820

Polishing
2,175

 
2,722

 
4,007

 
6,100

 
$
22,483

 
$
24,273

 
$
44,557

 
$
36,669

Operating income (loss):
 
 
 
 
 
 
 
Solar (1)
$
(2,266
)
 
$
(724
)
 
$
(4,130
)
 
$
(3,219
)
Semiconductor
(119
)
 
730

 
(279
)
 
630

Polishing
386

 
601

 
555

 
1,343

Non-segment related
(1,608
)
 
(2,543
)
 
(3,681
)
 
(5,482
)
 
$
(3,607
)
 
$
(1,936
)
 
$
(7,535
)
 
$
(6,728
)

(1) The financial statement of business units included in the Solar segment include some sales of equipment and parts to the semiconductor, silicon wafer and MEMS industries, comprising less than 25% of the Solar segment revenue.

 
March 31,
2016
 
September 30,
2015
 
(dollars in thousands)
Identifiable Assets:
 
 
 
Solar
$
46,778

 
$
45,717

Semiconductor
46,640

 
46,912

Polishing
5,714

 
5,793

Non-segment related
23,596

 
27,034

 
$
122,728

 
$
125,456